No, acrylic is not a good thermal insulator. It is a poor conductor of heat, but not as good as other materials like wool, fiberglass, or polystyrene. Acrylic is a synthetic fiber that is made from a polymer called polyacrylonitrile. It is a lightweight and strong material that is often used in clothing and other textiles. It is also used as a coating for other materials, such as wood or metal. Acrylic is not a very good thermal insulator because it has a high thermal conductivity. This means that heat can easily pass through acrylic, making it not very effective at keeping heat in or out of a space.